mirror of
https://github.com/ezyang/htmlpurifier.git
synced 2024-12-23 08:51:53 +00:00
a2fc5da060
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@157 48356398-32a2-884e-a903-53898d9a118a
46 lines
1.4 KiB
PHP
46 lines
1.4 KiB
PHP
<?php
|
|
|
|
require_once 'HTMLPurifier/AttrDef.php';
|
|
require_once 'HTMLPurifier/IDAccumulator.php';
|
|
|
|
// NOTE QUIRKY BEHAVIOR: even though this is the id processor, it
|
|
// will ignore HTMLPurifier_Config::$attr_id_blacklist: it will only
|
|
// go according to the ID accumulator. Since the accumulator is
|
|
// automatically generated, it will have already absorbed the
|
|
// blacklist. If you're hacking around, make sure you use load()!
|
|
|
|
class HTMLPurifier_AttrDef_ID extends HTMLPurifier_AttrDef
|
|
{
|
|
|
|
function validate($old_id, $config, &$accumulator) {
|
|
|
|
$id = trim($old_id); // trim it first
|
|
|
|
if ($id === '') return false;
|
|
if (isset($accumulator->ids[$id])) return false;
|
|
|
|
// we purposely avoid using regex, hopefully this is faster
|
|
|
|
if (ctype_alpha($id)) {
|
|
$result = true;
|
|
} else {
|
|
if (!ctype_alpha(@$id[0])) return false;
|
|
$trim = trim( // primitive style of regexps, I suppose
|
|
$id,
|
|
'A..Za..z0..9:-._'
|
|
);
|
|
$result = ($trim === '');
|
|
}
|
|
|
|
if ($result) $accumulator->add($id);
|
|
|
|
// if no change was made to the ID, return the result
|
|
// else, return the new id if stripping whitespace made it
|
|
// valid, or return false.
|
|
return ($id == $old_id) ? $result : ($result ? $id : false);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
?>
|